Improvement in hanger for shafting



gttuitizt 6gtst rf (Mitt .www

HENRY F. SNYDER, OF WILLIAMSPORT, PENNSYLVANIA.

Letters .Patent No. 86,186,

dated Janna/ry 26, 1869.

IMPROVEMENT IN HANGER IEOR SHAFTING.

The Schedule referred to in these Letters Patent and making part of thesame.

To all whom it may concern.-

Be it known that I, HENRY F. SNYDER, of Williamsport, in the county ofLycoming, and State of Pennsylvania, have invented certain new anduseful Improvements in Hangers for Shafting and I do hereby declare thatthe following is a full-and exact description thereof.

My hanger holds the shaft so that it is delicately7 adjustablevertically, and is allowed to play or swivel iu all directions, to allowfor slight crooks in the shafting, while it is guarded against fallingor moving far out of position, in case of the fracture of the delicateadjusting-parts.

I will iirst describe what I consider the best means of carrying outmy'invention, and will afterward designate the pointswhich I believe tobe new.

The accompanying drawings form a part of this specification.

Figure 1 is an end view and vertical central section, the left sidebeing an elevation and the light side a section;

Figure 2 is a corresponding side or edgeview, the left side being a sideelevation, and the right side a vertical section in the plane ofthe axisof the shaft;

Figure 3 is a horizontal section of the body of the hanger, and a planview of the movable parts enclosed therein; andV Figure 4 is an endview, showing the condition when the supporting-screws -fail.

Similar letters of reference indicate like parts Vin all the figures.

Iints are employed merely to aid in distinguishing parts, and do notnecessarily imply differences of material.

The material of the whole may be iron, with a lining of Babbit metalupon the interior of the boxes.

The gures represent the novel parts, with so much of the ordinary partsas is necessary' to indicate their relation thereto.

A is the body of the hanger, and

al a2 are pointed screws, adjustable in the body of the hanger, and heldfirmly in position by jam-nuts (t3. These screws and .jannnuts allow theadjustment of the boxes vertically, with the delicacy due to the most.approved hangers known.

B B2 are boxes, matched together as represented. They may be of anylength desired, and provided with any approved provision forlubrication.

-I have represented simply two cups or cavities to receive the oil, witha lsimple hole for conducting it down near each end.

Portions b b are accurately finished in a sphericalj form, the sphericalsurface b being in the ccntre'of the top of the part B, and thespherical surface b2 being iu the centre ofthe bottom of the part B2.

C1 C2 are castings, which perform very important functions. The twoloosely endose the boxes B1 BZ as represented, fitting tightly theretoonly upon the spherical surfaces, before described. At all other pointsthey stand oli' a quarter of an inch or other small distance; that is tosay, there is an internal projection, c, ou the part G, and an internalprojection, c2, on the part G2, which projections are concave, andadapted to fit exactly against the corresponding spherical surfaces bb2.

These parts, G C2, are alsoiinished with conical cavities, to receivethe points of the screws c1 a, and

their ends extend out and are received in grooves, c a5, onthe innersurfaces of the body A.

I give these grooves the form represented; that is to say, I make thesegrooves of considerable depth at the level'of thel centre of theshaft,rand diminishing in depth above and below that level. They areadapted to receive and loosely enclose the correspond* ing projectingends of the parts G C, and to allow thenl tomove therein to a limitedextent, and these cavities are sufficiently deep, and suiicientlystrongly enclosed, and the project-ing ends of the parts C O2 aresudiciently strongaud long, so that, while they are of little effect solong as the screws a1 a2 perform their functions properly, they willreceive and support the'entire weight of the shafting, and of all thedependent parts, in case the screws ala? should break or fail.

In case of a failure of these screws, the boxes with the enclosed shaftwill fall, or go ont of line; but it can thus move only to a very shortdistance before its motion will be arrested by the firm contact of theends of the parts G CA2' against the bottoms or walls of the grooves a*ai'.

In the use of my invention, ,the hanger is secured to an overhead-beam,or other suitable part, by screwbolts, or otherwise, as usual.

The shaft, being accurately fitted intro the lubricated boxes B B2, islined up to the proper level by the screws all a?, being readjusted bythese screws whenever any part of the building settles so as to requiresuch adjustn'ient.

In case the shaft is not absolutely straight, the boxes B B2 will wabblea little with each revolution of theshaft. The side motion in such casesis effected by the; turning of the parts Cl C2 on the points of thescrews a a2, the grooves a* a being suciently wide to allow of thismotion; and the wabbling motion, in the vertical plane, is allowed forby the slipping of the spherical surfaces within each other; that is tosay, the spherical surface b slides backward and forward to a smallextent within the corresponding concave c, and the spherical surface b2slides backward and for ward within the corresponding concave` c2.

These spherical surfaces may also accommodate the horizontal motion, ora part of it, in case it` becomes too gneat to be allowed for by theplay within the grooves a* c, but under ordinary circumstances this willnot be necessary.

All the parts work as usual, except in the contingency of a failure ofthe screws. In such ease, the shaft simply falls or rises, according asthe strain of the belts, gearing, or other-forces shall'determine, to asmall extent. After it has falleneor risen bodily, to a small extent,its further motion is arrested by the .pinching 'of the ends of theparts 0 Ciwithin the grooves a* a5, and the shaft will now stand andperform in its new position, with some success, until the'at" aster tothe machinery or the workmen, in' case of the failure of the screws,while it allows all the refinement of accurate adjustment which can berequired in any business or in "any situation.

sexes I esteem it an advantage' of some importance, in practice, that myconstruction not only holds the boxes and the contained shaft Aafter theadjustingscrews u* aF are broken, but, by reason of the sphericalsurfaces necessarily'presented between the boxes and the parts Cl C",allows the boxes to swivel in their,

fallen position, and thus tends greatly to avoid breakingunder thestrain to which the parts aresubjected.

Havngnow fully described myinvention, Y Y' Y Y Y What I claim as myimprovement in shaftinghang ers,and desire to secure by Letters Patent,is as fol-' lows:

I claim' the castings C1 G2, held in position within the grooves in theframe,"'or their equivalents, in eonnection with the boxes Bl B2,arranged as represented,

so as to turn inthe manner of a universal joint, substantially as hereinset forth.

HENRY F. sNYDER.

Witnesses:

C. ROGERS,

H. D. HnIsER.

